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24 vs 26 Paychecks: How Pay Frequency Affects Each Check

February 12, 2026Taxes5 min read

By Helium Day Tax

Understand the difference between 24 and 26 paychecks, why your per-check withholding shifts and how a net pay calculator Washington estimates take-home pay.

24 vs 26 Paychecks: How Pay Frequency Affects Each Check

What is the difference between 24 and 26 paychecks?

24 paychecks means an employee is paid twice each month — semi-monthly. On the other side, 26 paychecks signifies an employee is paid every two weeks — biweekly.

How do the pay dates line up across the year?

  • Semi-monthly pay is linked with the set calendar dates. For instance, the 15th and the last day of the month — although pay dates might change in the case of landing on weekends / holidays.
  • Biweekly pay obtains a weekday pattern — for example, every other Friday. That’s why a biweekly schedule generally creates 2 months per year with 3 paydays in a 26-paycheck year.

What changes in the calculation?

The annual salary stays the same. However, each check is treated in a distinct way as outlined below:

Feature

24 paychecks (semi-monthly)

26 paychecks (biweekly)

Pay timing

Set dates each month

Every 14 days

Checks per year

24

26

Amount per check — same salary

Higher

Lower

Three-paycheck months

No

Usually 2 months

Does it change taxes or take-home pay?

Even if the year-end tax bill is according to total annual income, it might change the “timing” of what comes out of each check. Small swings happen as withholding leverages paycheck-based calculations and specific deductions hit on certain pay cycles.

Items that generally shift can be listed as below:

  • Federal withholding — based on your W-4
  • Social Security & Medicare
  • Benefit premiums & retirement contributions
  • Washington programs like WA Cares Fund, Washington PFML, and Washington L&I — when applicable

Which schedule feels easier for budgeting?

Semi-monthly lines up in an optimal way with rent & other monthly bills. Biweekly presents occasional “third checks,” which many people put toward debt & big expenses or savings.

Would you like your pay setup checked?

If the pay schedule & deductions, or withholdings, look off, contact us today at Helium Day Tax & CPAs. Our experts will review the paystub, explain what you’re seeing, and present assistance in keeping payroll & tax payments on track.